Copper Center, Alaska, sits in USDA hardiness zone 2b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include cabbage, potato, rhubarb, and kale; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Copper Center, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Copper Center lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Copper Center — soil, climate, flood, and parcel records. How we handle your address.
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Copper Center — the short answer
Copper Center, Alaska: USDA zone 2b, about 109 days between hard freezes, across 8K acres of town.
- USDA zone
- 2b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 21
- Copper River Census Area normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Sep 7
- Copper River Census Area normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~109
- Copper River Census Area normal — NOAA 1991–2020, nearest to this town
- Town area
- 8K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Copper River Census Area’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 2b is Copper Center's average, not your lot's — a low corner or a tree line moves it. Against Copper Center's 109-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Copper Center
Each reading below is measured for Copper Center itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsCopper Center runs about 109 days between hard freezes (read from Copper River Census Area, the closest normal to Copper Center) — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredCopper Center sits in USDA hardiness zone 2b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
What Grows in Copper Center
Plants matched to Copper Center's USDA zones 2b, ordered by how much hardiness margin each has here — the ones with room to spare at both ends of this town's band lead. Each links to its full growing profile.
Is it too late to plant in Copper Center?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 7 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
What's on the federal record near Copper Center
Closest first, within ~10 miles of Copper Center. Listing isn't leaking, and distance isn't exposure.
- CB00200101BCAD1 003 40024 LLOYD BELLNitrate · 1.2 mi
- ALASKA DOT & PF TAZLINABrownfields · 1.2 mi
- CB00200101BCDA1 004 40023 PETE MENTASTENitrate · 1.3 mi
- CB00200101BACB1 001Nitrate · 1.4 mi
- CB00200101BDBB1 005Nitrate · 1.4 mi
- CB00200101BCDB1 008Nitrate · 1.4 mi
- CB00200101BDBC1 006Nitrate · 1.4 mi
- CB00200101BDCA1 007Nitrate · 1.5 mi
- CB00200101CABA1 009Nitrate · 1.6 mi
- CB00200101CAAB1 002Nitrate · 1.7 mi
- CB00200101CAAC1 010Nitrate · 1.7 mi
- CB00200101CADA1 011Nitrate · 1.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Copper Center's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Copper Center.
Total Sites
100
within ~10 miles of Copper Center
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Copper Center
Severity Distribution
within ~10 miles of Copper Center
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Copper Center, Nitrate runs higher than the national average — 82 sites within ~10 miles of Copper Center. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Copper Center
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Copper Center average
Your land is one point inside Copper Center
Everything above resolves to Copper Center as a whole — one PHZM band, read across 8K acres, with hard-freeze dates borrowed from Copper River Census Area’s record because no 30-year normal resolves at this town’s own centroid. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Copper Center Average
Copper Center Average
- ●USDA Zones 2b, averaged across Copper Center
- ●One soil character for all of Copper Center
- ●Frost dates read at Copper Center's scale: May 21 to Sep 7
YOUR Parcel
- ✓Your exact zone, not Copper Center's 2b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Copper Center
Pull a site-specific report for your exact address in Copper Center, Alaska — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Copper Center averages can't show:
We read public map data around Copper Center — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Copper Center average
How we know this about Copper Center
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Copper River Census Area’s record, because none resolves here; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Copper Center
When does frost risk typically end in Copper Center?
The last hard freeze (28°F) in Copper Center typically lands around May 21, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Jun 11.
When is the first frost in Copper Center?
The first hard freeze (28°F) in Copper Center typically arrives around Sep 7, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Aug 24, so the watching starts about Aug 8 — about 109 days after the spring freeze cleared.
How long is the growing season in Copper Center?
Measured between 28°F hard freezes, Copper Center sees about 109 frost-free days — roughly May 21 through Sep 7, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 11 to Aug 24, about 74 days.
Is the soil safe to grow vegetables in Copper Center?
The federal record around Copper Center is a meaningful one — 100 documented sites, mostly Nitrate entries (82), the nearest Nitrate record about 1.2 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do gardeners stretch the season in Copper Center?
With about 109 frost-free days between hard freezes, Copper Center rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 137 to 165 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 21 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Copper Center's scale — its 2b band and its 109-day season. Your yard writes its own version of Copper Center's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Copper Center’s own scale
3 of the readings below were taken at Copper Center's own scale — the 7,997 acres it covers and 100 documented sites around it; 6 are borrowed from a wider read, named and linked below.
Measured here
- Copper Center's own USDA hardiness band, zones 2bUSDA PHZM 2023
- 100 documented contamination sites on the federal record near Copper Center, the closest Nitrate record about 1.2 miles out from the town centreFederal environmental registers
- Copper Center's boundary and the 7,997 acres inside itUS Census TIGER/Line 2025
Inherited from a wider read
- The 28°F hard-freeze dates — Copper Center has no normal of its own, so its county's is the closest measured readfrom Copper River Census Area
- Soil character — no town-scale survey exists, so Copper Center's 7,997 acres read through its county's SSURGO summaryfrom Copper River County
- The candidate plant list — Alaska's curated set, filtered to this zone band and re-ordered by how much margin each has herefrom Alaska
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Copper River County
- The growing challenges every Alaska grower plans around — written at state scale, so they stay on the state guidefrom Alaska
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Copper River County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Copper Center's 7,997 acreswhy one lot differs from the next →
- Which side of Copper Center you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 7,997 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 1.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Copper Center-wide figureread your own land →
More in Alaska
Wider growing context
What grows across AlaskaCopper Center sits outside our named growing regions, so Alaska as a whole is its closest context here.
Nearby growing guides